The Second Noon Letter in the Quadrilateral Between Originality and Increase

الملخص

The aim of this research is to study the second noon in the quadratic words, in which the letter is sometimes a suffix, and sometimes an original. It cannot be carried as a suffix unless there is evidence that it’s added by derivation or other; because the second Noon is doomed to authenticity unless the conditions of adding it ,and because it wasn’t added as much as the third noon, this is recognized by the scholars of Arabic. The researcher selected some words to study. The indication based on adding a suffix, and some ranges between originality and suffix, according to the evidence that the world considers appropriate.